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2026-07-29·8 min read·Validation & Performance

We Tested Our Models Against Data They've Never Seen

Out-of-sample validation proves genuine predictive skill — not overfitting. Here's what 263 NFL plays taught us.

This research memo documents our out-of-sample testing protocol and findings for the Signal Syndicate model suite.

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This article was originally published at https://signalsyndicatemedia.com/blog/oos-validation-findings/. This is an app domain mirror for user convenience.